Mercury – Water Separating Fuel Filter Kit | For 1992 MerCruiser 4.3L Gen II Engines | 807172A1

Overview

Clean fuel is the lifeblood of your engine, and the Mercury Marine 807172A1 Water Separating Fuel Filter Kit keeps it that way. Designed for 1992 MerCruiser 4.3L Gen II gasoline sterndrive and inboard engines, this kit removes water and debris from your fuel before it ever reaches your carburetor or injectors. It’s a complete, ready-to-install system — including the mounting bracket, vessel mount head, and screw-on fuel filter — made to deliver the dependable fuel flow and protection your MerCruiser needs to perform at its best.

Key Features

• Purpose: Removes water and contaminants from your fuel system to prevent damage.
• Compatibility: Designed for 1992 MerCruiser 4.3L Gen II gasoline engines equipped with an in-line fuel filter.
• Complete Kit: Includes extended mounting bracket, vessel mount head, and water-separating filter.
• Fuel Type: For use with gasoline only.
• Ease of Use: Simple installation with clear instructions included.

Engine & Boat Compatibility

• 1992 MerCruiser 4.3L Gen II sterndrive and inboard gasoline engines with in-line fuel filters

Performance & Real-World Benefits

The 807172A1 water separating filter kit protects your engine from two of its biggest enemies — water and fuel contamination. Even small amounts of water in your fuel can cause misfires, corrosion, and poor performance. This system filters out moisture and debris before it reaches your engine, helping maintain smooth acceleration and clean combustion.

Built to Mercury’s exact OEM standards, the screw-on canister design makes future maintenance simple — just spin off the old filter and replace it with a new one. It’s an easy upgrade that adds an extra layer of insurance for your engine, especially if you run your boat in humid or saltwater conditions.

Why Choose Mercury OEM

The Mercury 807172A1 is a genuine OEM fuel filtration system, made to match the fuel delivery requirements of MerCruiser engines. Aftermarket filter kits may not meet Mercury’s filtration or flow specifications, leading to poor engine performance or restricted fuel supply.

Mercury OEM filters and hardware are engineered and tested under real marine conditions for reliable protection, corrosion resistance, and long-term use. It’s the same setup used by factory technicians — giving you confidence every time you turn the key.

FAQ

Q1: What engines does this kit fit?
It’s made for 1992 MerCruiser 4.3L Gen II gasoline sterndrive and inboard engines with in-line filters.

Q2: What’s included in the kit?
You’ll get the mounting bracket, filter head assembly, and screw-on water separating fuel filter.

Q3: Is this for gasoline or diesel?
Gasoline only — it’s not suitable for diesel applications.

Q4: How often should the filter be replaced?
Replace the filter once a season or every 100 hours, whichever comes first.

Q5: Why OEM instead of aftermarket?
Because Mercury OEM kits are built to match factory fuel flow rates and filtration standards, ensuring reliable protection and performance.